John a



n f NTED STATES A,

PATENT" 'OEEICE.

JOHN A. OREERMAN, OE ROoHEsrER, NEWAYORK, AssiGNOR OE ONE-HALE To GEORGE H. GRAHAM, OET SAME ELAOE." g

STOP-VALVE.

SPECIFICATION fprmigpart of Letters Parent 10.381.055 dared Apri11o,1aaa.

1 Application tiled February 8, 1888. Strial, No 263,338.. (No model.)

To all whom, it may concern:

Be it known that I, JOHN A. GREELMA'N, of Rochester, in the county' of Monroe and State Vof New York,'have invented a new and useful Improvement in Stop-Valves, which improvement is fully set forth in the following specification and shown'in `the accompanying drawings. v j

The object of my invention is to produce new and novel meansv for operating a valve within a steam or water tight globe or inclosure by a handle without, without resorting to the use of a stuffing-box to make the inolosure complete, the invention being hereinafter fully described, and more particularly pointed out inthe claims. I aimto connect the external-*handle with the valve within the inclosure by intermediate parts, includinga eXible diaphragm to close Vthe mouth ofthe inclosure, which diaphragm,v is made rigid with one of the intermediate partsbetween the handle-and valve, and moves with said part as the latter is moved to openor close the 'passage-way out of said inclosure by mea-ns of the valve. This device vmay be used for steam, gas, or other fluids; but I design it more particularly to be used With hot water, oonnected with a radiator for heating purposes.

v Referring to the drawings, Figure 1 is a cen- .'tral'longitudinal section of apart ofthe shell ot' 4a globe-valve with attached parts, some ot` the parts'being shown in two-positions by full and dotted lines; Fig. 2, `an elevation of the device seen as indicated by arroww inFig. 1, parts being broken away to uncover interior parts; Fig. 3, aview ofthe device seen as indicated by 4arrow y in Fig. l, some ofthe upper parts being omitted and the diaphragm in part broken away.Y Figs. 4 and 5 represent different-elevations of anothersimple method ofjoining some of the parts.

Referring to the parts of the` device shown in the drawings, A is the globe or shell of a globe-valve, substantiallyof common form. B is a pipe leading into the globeand a vand hand-wheel are tted to turn together by any ordinary means--as, for instance, a key` Vor a clamping screwnut, IZ.

Vnally-projectinglugs @,between which the lever or bar c is pivoted upona pin,f. f

g is a tight oircu'larvdiaphragm havinga diameter equalto that'of the exterior of the" ring, placed upon the latter to tightly close the upper opening ofthe globe.

h isv a threaded stud passing-vertically through a central opening inthe diaphragm,y 6p y.

to which latter it is made rigid and joinedjwith a steam-tight joint. This plug is joined to the short arm of the lever beneath the diaphragml and in the water-space within the globe.

D is a conical cap for the globe, joinedtotthe `,.6

latter-by Vmeans of a screw-thread ins tially the ordinary manner, said'cap y1 11 ameters of which two 'parts being a little lessi than the internal diameterof the cap. a 7o 7c is a stem passing vertically through the-v upper jpart of the cap,to which is 'secured instance, a'common handTwheel, E. ThelstemV -some convenient handle for operating,it-sfor;v

Within the cap the stem k is expanded at s,

and internally threaded to receive thethreaded portion of the stud h above the diaphragm. The stem has a journalbear-ing atm. 1nL the upper end of the cap, so that it may be turned j upon its axis therein by means of the `hand f,

wheel. The lever or bar c is joined. to the valve by some simple means-'-as,'fori.nstance, by being 'inserted between lugs o, projecting from the back side of the'val've and held by a transverse pin, p. n

Now it will be understoodfthat as the stem. is turned one way or the other by means of t-he hand-wheel the stud will be n'raisedI or'depressed, carrying with it thel diaphragmfand causing the lower end of the lever, with the at;

tached valve, to move laterally toward orfrom f the seat r of the opening b. The arms f the lever, being unequalin length, cause the valve to move through a proportionately'greater space than the diaphragm. The cap is formed .y

Yroo v! f plete, save as to the inlet and outlet openings through the respective pipes B and C.

The portion t of the stud below the diaphragm may be formed with an eye to receive the rounded arm i of the lever, or it may be bifurcated to receive between its divided parts the arm i, made fiat, as shown in Figs. 4 and 5. The manner of connecting these parts is a matter of mechanical skill and not invention.

I prefer to make the diaphragm with annular corrugations instead of being plain, as shown, though I do not Wish to confine myself to any particular form of diaphragm.

By proportioning the area of the valve acted upon by the pressure Within the globe to the area of the diaphragm subjected to the same pressure the Valve may be balanced-that is to say, the parts may be proportioned so that the pressure against the under side of the diaphragm tending to open the valve mayjust equal the pressure against the valve tending to keep it closed.

The bar c is formed with an extension, t',

below the pin p, to bear against the valve to prevent the latter turning down from gravity when raised oi' its seat. This stop t is a little moved back to open the passage through the opening b, as stated.

1. A globe and valve therein, in combination with a cap for the globe, a stem in the cap, a handle secured to the stem, a diaphragm, a stud rigid with the diaphragm operated by the handle, and a connecting bar or lever Within the globe for said stud and valve, substantially as shown and described.

2. A globe and valve, in combination with a cap for the globe, a stem held by the cap, a. handle secured to the stem, a diaphragm, a stud rigid with the latter operated by the handle, and a connecting-bar for said stud and valve, said bar being formed with a stop for the valve, substantially as and for the purpose set forth.

JOHN A. CREELMAN. Witnesses:

E. B. WHrrMoRE, M. L. MCDERMOTT. 

